Engineering design R039

• needs


  parts of design that are critical to the future outcome
• wants


  parts of design not critical but desirable to the future outcome
• legislation


  legal terms/the law passed by parliament
• surface finish


  nature of a surface defined in terms of its roughness / lay (pattern) / waviness (irregularities)
• unibody


  the frame integrated into the body construction - frame is just one part
• target cost


  how much a company wants to sell a product for
• break-even point


  the point where enough products have been sold to cover the development costs
• demographic


  used to describe the numbers & characteristics of people who form a particular group
• Supply chain


  Network of business that supply materials, components or services needed for the manufacture of a product
• Standard


  An agreed way of doing something such as making a product, managing a process or delivering a service
• Prosecuted


  Officially accused in the court of breaking a law
• Tolerated


  Amount of variation allowed in a given dimension
• Multi-functional product


  Single product that can carry out the tasks of multiple products
• Products performance


  How well a product can carry out its task
• Durability


  Ability of a material to withstand wear, pressure or damage
• Tensile strength


  Strength of a material when it is stretched or pulled
• Compressive strength


  Strength of a material under load (where the load is compressing the object)
• Resistance to corrosion


  Ability of a material to resist deterioration cause by reactions to its surrounding environment
• Composite materials


  Materials made up of two or more different materials, combining their properties to create a new improved product
• Low carbon steel


  A low carbon ferrous material (contains iron) that consists of less than 0.3 per cent carbon; also known as mild steel
• Ductility


  The ability of a material to be stretched under load without breaking
• Toughness


  The ability of a material to resist impact or shock loads (such as press-forming a car body panel)
• Malleability


  The ability of a material to be shaped or deformed by compression forces (such as hammering or pressing)
• Standard stock sizes


  Material and components that are readily available in a range of sizes.
• Bioplastics


  Biodegradable plastic materials produced from renewable sources such as corn starch
• Smart materials


  Materials that change in response to stimuli in the environment
• Labour intensive


  Needing a large amount of effort from a workplace in relation to the amount of output produced
• Standard Components


  Individual components made in a large quantity (often by mass production) to the same specification.
• Sub-assemblies


  Units of assembled components designed to be incorporated with other units/components into a larger manufactured component
• Pre-manufactured components


  Components or sub-assemblies manufactured separately from the whole product, sometimes by an external supplier, that are then assembled into the final product.
• uniform thickness


  Consistent thickness throughout the whole component.
• Part Warping


  When a moulded component deforms from its desired shape because parts of the material cool and shrink at different speeds; usually occurs when the thickness of the material changes.
• Draft angle


  Sloping face on the wall of a component, set at a specific angle so that is can be removed from a mould.
• Design for disassembly


  Features added to a design that allow it to be easily taken apart for cleaning, maintenance or disposal.
• Production methods


  how many things are made at once

  One-off production, batch-production and mass production
• One-off production


  Manufacturing products one at a time.
• Bespoke


  Made specifically for a particular customer or user
• Batch production


  Method used in manufacturing where products are made specific amount (a batch) within a specific time frame
• Mass-production


  The production of a large quantity of a standardized product or component, often using automated production processes also known as continuous/mass production
• Automation


  Using computer technology to operate equipment rather than humans